Back-wing support for grain-binders.



N0. 857,950. PATENTED JUNE 25, 1907. G. MAUL.

BACK WING SUPPORT-FOR GRAIN BINDERS.

1 APPLICATION FILED NOV. 20, 1905.

2 SHEETS-SHEET 1.

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No. 857,950 PATENTED JUNE .25. 19074 (LMAUL.

BACK WING SUPPORT FOR GRAIN BINDERS.

APPLICATION FILED NOV. 20, 1905.

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CHRISTIAN MAUL, OF BATAVIA, NEW YORK, ASSIGNOR TO THE JOHNSTON I-IARVESTER COMPANY, OF BATAVIA, NEW YORK.

BACK-WING SUPPORT FOR GRAIN-BINDERS.

Specification of Letters Patent.

Patented June 25, .1907.

Application filed November 20, 1905. Serial No. 288,201\

To all whont it may concern:

Be it known that I, CHRISTIAN MAUL, a citizen of the United States, residing at Batavia, in the county of Genesee and State of New York, have invented a new and useful Improvement in Back-Ting Supports for Grain-Binders, of which the following is a specification.

This invention relates to back-wings or wind-breaks for grain binders.

The back-wing, as is well known, is sup ported in an upright position over the rear portion of the platform of the binder and serves to prevent the scattering of the grain and derangement thereof on the platform. The back-wing has to be adjusted parallel with the cutter bar forwardly or rearwardly of the platform according to the length of the grain being cut, and this invention relates more particularly to the means for supporting and adjusting the back-wing.

The object of the invention is to produce a strong, durable and desirable means for adj ustably supporting the backWing'and main taining its parallelism, which is of eXceed ingly simple and inexpensive construction, which can be easily adjusted and which will hold the back-wing steady or rigid in its different adjustments, always maintaining the parallelism thereof.

In the accompanying drawings, consisting of two sheets: Figure 1 is a fragmentary plan view of a portion of a grain binder provided with a back-wing support embodying the invention. Fig. 2 is a fragmentary plan view of the back-wing support. Fig. 3 is a sectional elevation of the parts shown in Fig. 1. Fig. 4 is a sectional elevation, on an enlarged scale, of the inner end of the support in line 4-4, Fig. 2. Fig. 5 is a perspective view of the saddle block for the supporting arm de-.

tached.

Like letters of reference refer to like parts in the several figures.

A represents a portion of one of the bars of the main frame of the machine, the same preferably being the horizontal bar or pipe near the inner end of the platform which supports the drivers seat, and B the lower platform or horizontal conveyer on which the grain falls as itis cut and by which it is carried to the binding mechanism, or elevator.

O represents the back-wing or wind-break and D the supporting and adjusting arm therefor. The back-wing may be of any usual or preferred construction. The supporting arm, as usual, is pivotally supported in some suitable manner at one end to swing forwardly and rearwardly over the platform, and the back-wing is pivotally suspended from the outer or free end of the arm so that its parallelism can be maintained in the different positions of the supporting arm. In the construction shown the backwing is pivotally suspended from the outer end of the supporting arm by a vertical bolt d, and the inner end of the supporting arm is pivoted to I the frame bar A by spaced bars or straps e c which are rigidly secured, as by bolts, to the top and bottom of the supporting arm and straddle the frame bar A to which they are connected by a pivot bolt E, see Figs. 3 and 4. The pivot bolt E is preferably one of the bolts employed to fasten the drivers seat F to the frame bar. A saddle block or bracket G is interposed between the round frame bar or pipe A and the foot of the seat postf. This block or bracket has a concaved under face to fit the frame bar and fiat top faces for the seat post to rest upon, and is also provided with an arm or portion g which projects outwardly from the frame beneath the upper bar e of the supporting arm. The spaced bars 6 6 connected to the ends of the relatively long pivot bolt, assisted by the bracket arm 9 on which the upper bar of the supporting arm bears at a considerable distance from the pivot bolt, prevent the supporting arm from sagging and provides a very stable pivotal connection for the supporting arm. The connection is also very cheap because the saddle block and one of the securing bolts for the drivers seat also constitute the pivot bolt and bracket for the supporting arm, thus making separate connecting p arts for the supporting arm unnecessary.

H represents a holding rod which is pivoted at one end to the back-wing at a little distance from the pivot bolt for the wing, preferably by a down-bent end of the rod secured in a hole in a bracket projecting out from the upper edge of the back-wing. The other end of the rod has a slidable and pivotal connection with the supporting arm, preferably formed by the down-bent end it of the rod which passes through an elongated slot h in the upper bar of the supporting arm and is adapted to engage in one of a series of stop holes h in the bracket arm g. Stops other than holes could be provided on the bracket arm for the locking engagement of the end of the holding rod. When the inner end h of the holding rod is thus engaged with one of the stops 7L2 through the slot in the supporting arm it positively locks the supporting arm from movement. The stops 7L2 are so disposed that the holding rod must be shifted endwise somewhat to engage it with the different stops, and this endwise movement of the rod causes the back-wing to swing sufficiently on its pivot bolt d to maintain its parallelism in the several positions of the supporting arm. The rod H is both a locking and parallelin means for the back-wing.

To change the position of the back-Wing it is only necessary to lift the inner end of the holding rod H out of engagement with one stop, swing the supporting arm on its pivot to advance or retract the back-wing to the desired position and drop the end of the holding rod into engagement with the proper stop.

The supporting and adjusting means constructed as described are exceedingly simple and inexpensive, but strong and durable and produce'a desirable and stable support for the back-Wing.

I claim as my invention:

1. The combination of a supporting arm pivoted at one end, a back-wing pivoted to said supporting arm, a rod connected to said back-wing and having a part passing through I a slot in said arm, and a series of stops for the engagement of said part, substantially as set forth.

2. The combination of a bracket having a projecting arm provided with stops, a backwing,a supporting arm for the back-Wing pivoted to said bracket and resting upon said bracket arm, and a rod connected to said back-wing and having a part which passes through a slot in said supporting arm and engages with one of said stops, substantially as set forth.

3. The combination of a supporting arm pivoted at one end, a back-Wing pivoted to said supporting arm, a stationary part adjacent to the pivot end of said supporting arm provided with a series of stop holes, and a rod pivoted at one end to said back-Wing and having at its other end a down-turned portion which passes through a slot in said supporting arm into engagement with one of said stop holes, substantially as set forth.

4. The combination of a pivoted supporting arm, a back-Wing mounted on said supporting arm to assume different angular positions relative thereto, a series of stops, and

a rod connected to said back-wing and hav-v ing a slidable and pivotal connection with said supporting arm and having a part for engagement with said stops to hold the supporting arm in different positions, substantially as set forth.

WVitness my hand, this 17th day of November, 1905.

CHRISTIAN MAUL] Witnesses E. C. FARRALL, WILBER BUCK. 

